Vacuum cleantr bag



1933. c. R. DICKINSON VACUUM CLEANER BAG Filed July 29, 1932 R O T N E Vm ATTORNEQ Patented May 30, 1933 PATENT oer-Ice 1 CHARLESRALrHmoK'INsoN, or eLnnMoon-E, PENNSYLVANIA,

vacuum CLEANER- BAG Application filed Jul 29,

This invention relates to the art of vacuum cleaners and more especiallyto an improved air and dust passage for vacuum cleaner dirt'bags.

15 At present dust or dirt enter the lower end of the bag, and thoughthe larger portion of the bag is suspended ina downward direction it ispossible for the bag to clog or choke up as the bag tends towardfilling,

' and thereby retard the entrance of subsequegt dirt and dust. I

Y ith the idea. of overcoming such contingency, it is the purpose of thepresent-invention to provide an entrance-passage for substantially thefull length of the bag, so

that the dust and dirt may travel to the upper end of the bag and thendeposit downwardly in the larger portion of the bag, and thereby preventchoking up and any back 0 pressure whatever in the bag.

\Vhile an entrance passage of this character can be employed inconnection with cloth bags, it is the particular aim to use thisinvention (entrance passage) especially for use in connection with paperbags,which are now being extensively used, because they can be thrownaway, burnt up or otherwise destroyed, and thereby avoid the necessityof emptying thebag after once filled.

It is well known that there are certain vacuum cleaners, such as forinstance in the patent to Paul Witte No. 1,802,228 which employ apermanent tube within the dust bag so that the dust and dirt can becarried to the upper portion of the bag and deposited in the largerportion of the bag, thereby avoiding stoppage or any back pressure, butin this type of bag it is still necessary to empty the bag, andfurthermore such type of bag is not dispensible as with a paper bag,therefore it is not the aim of the present invention to claim broadly anentrance passage.

'- However the main purpose of the present invention is to convertthe'now extensively used paper bag, to provide for the same anentrancepassage, by applying removable or detachable strips on opposite exteriorfaces of the paper bag, or even to a cloth bag',-thereby pinchingtogether the op- 1932. Serial No. 626,251.

posite walls of the bag in order to formthe entrance passage. Y Y e Byproviding such detachable or removable strips, it is obvious that thestrips can be applied to the inexpensive paper bags at the time of theirmanufacture, or the strips can be sold direct to the owners of vacuumcleaners, using paper bags, so that the strips can be applied to the bagby the owner.

A further purpose is to provide any suitable means for detachably orremovably fastening the strips in position, or to employ a row ofstitching, provided the strips are constructed of relatively heavy fiberor card board, to removably fasten the strips in place.

While it is-the purpose to use any improved detachable fasteningmeans'it is preferably the aim to employ the now extensively usedconventional type of snap fastener, which comprises the male and femaleelements, the former being of such proportions as to pass through thewalls of the paper bag and enter the female element, thereby not onlyseparably fastening the strips together and to the bag, but alsoclamping or pinching the opposite walls of the bags together, in suchwise as to prevent any escape of the dust between the clamped or pinchedparts but also causing the entrance passage to be formed so as to carrythe dust and dirt to the upper portion of the bag and deposit it in thelarger part of the bag from the upper end thereof.

It is also the aim when using such type of snap fasteners to punch holesor perforations in the walls of the bag, in order to provide clean cutopenings for the male elementof the fastener. 7 I Y It is also the aimto use the type of fastener wherein the male element has a self-piercingsharpened thin flat blade like stud, which can force its way through theparts in order to vacuum cleaner dirt or dust bag, so that the temporaryclamping means may be detached from one paper bag andapplied to another.

It is to be understood that the particulars herein given are in no waylimitative, and

Figure 1 is a View of a vacuum cleaner showing the dust or dirt bagprovided with an entrance passage.

Figure 2 is a longitudinal sectional through the same.

Figure 3 is a cross sectional view online 3-3 of Figure 1. i Y

Figure 4 is an enlarged sectional view on line 1- 1 of Figure 2 showingone form of snap fastener.

Figure 5 is an enlarged sectional view showing a modified constructionof snap fastener wherein the male'element includes a self-piercing thinflat blade like stud which cuts its way through the walls of the bag.

Figure 6 is a view of another modified form, showing the strips clampedby means of a spring split tube.

Figure 7 is a perspective view of a dust bag using a spring split tubeto clamp the bag to View "form the passage 7 without the clampingstrips.

Figure 8 discloses enlarged views of the male and female elements of thefastener shown in Figure 5.

Figure 9 is a sectional view through a mod ified form showing bolts.

Referring to the drawing 1 identifies a Vacuum cleaner of conventionaltype and 2 the duster dirt bag, which is suspended in any convenient wayfrom the handle 3 of the vacuum cleaner.

Carried by the opposite walls of the bag, which is preferablyconstructed of paper, more or less porous for the passage of airtherethrough, though it is obvious it may be constructed of cloth areclamping strips 4. These strips may be constructed of any suitablematerial, either wood, card board or similar fibrous material, and maybe of any suitable length, thickness and width. These strips aredisposed in position in alignment with one side of the restricted neck 5of the bag, which is provided with a printed line 6 to indicate wherethe strips are to be applied, thereby causing an entrance passage 7 tobe formed. The'strips terminate a short distance from the upper end ofthe bag to provide a throat 8 where the dust or dirt passes from thepassage 7 into the larger portion of the bag and therefore deposits atthe bottom,

thereby preventing any stoppage or back pressure.

Carried by the strips 4 are snap fasteners 9, the male element 10 ofwhich is carried by one strip, the female element 11 by the opposingstrip, the strips being positioned on the opposite exterior surfaces ofthe walls of the bag incident to where the imprint line 6 is provided.

However before positioning the strips the bag may be punched withopenings or perforations 12 in order to provide openings with cleanedges, so that the strips can closely contact with the opposite remoteexterior surfaces of the walls of the bag, in order to insure pinchingor clamping the adjacent surfaces or the walls of the bag together, andin such wise as to prevent passage of dust or dirt between the adjacentparts, and also to insure the passage of the dust or dirt through thethroat 8. 1

Referring to Figure 5 it is to be noted that the male element of thefastener has a selfpiercing thin flat blade like stud 13, which acts tocut its way through the material in order to engage through the walls ofthe bag and into the female element. By this means there is no necessityof previously punching the openings or perforations in the walls of thebag in order to provide clean cutting edges around the openings.

Referring to F igure 6 the strips are held in place-by a spring splittube 14, which .engages with grooves 15 formed in the remote faces ofthe strips, while in Figure 7 the spring split tube is used to clamp theopposite walls of the bag without the use of the strips. I

In Figure 6 the edges of the tube 14 engage into grooves 15 of theclamping strips, and the adjacent faces of the clamping strips havesharpened points to penetrate the opposite walls of the bag. Arrangedunder the upper extremities of the clamping strips are circular or discshaped shields 17, which are relatively large as shown, and they shouldpossess a required amount of stiffness to protect the paper of the bagand prevent undue tearing or rupture to the walls of the bag, they alsopossess a reasonable amount of pliability to permit them to yield incase the bag flexes more or lessat its upper end.

The clamping strips 4 may be fastened together by small bolts and nuts4a as shown in Figure 9, the bolts passing through the walls of thepaper bag. I

The invention having been set forth, what is claimed is: v

1. As an article of manufacture, avacuum cleaner dust bag, comprising abag body, a pair of removable clamping elements disposed upon remoteexterior opposite surfaces of the wall of the bag and in spaced parallelrelation to one longitudinal edge of the bag, thereby causing anentrance passage to be formed in the bag, and means for clamping theelements against the opposed surfaces of the bag.

2. As an article of manufacture, a vacuum cleaner dust bag comprising abag body, a pair of clamping elements removably applied to remoteopposite faces of the walls of the bag in spaced parallelism with oneedge of the bag, thereby causing an entrance passage to be formedlongitudinally of the bag and having a throat to discharge into thelarger portion of the bag, and means carried by the elementspenetratable through the walls of the bag for clamping the elementsremovably in position.

3. As an article'of manufacture, a vacuum cleaner dust bag, comprising abag body, a pair of clamping strips positioned on opposite remote facesof the bag in spaced parallelism to one edge of the bag thereby causingan entrance passage to be formed longitudi nally of the bag terminatingin adischarge throat at the upper end of the bag, and means carried bythe strips penetratable through the walls of the bag for securing thestrips in position.

4. As an article of manufacture, a vacuum cleaner dust bag, comprising abag body, a pair of clamping strips positioned on opposite remote facesof the bag in spaced parallelism to one edge of the bag thereby causingan entrance passage to be formed longitudinally of the bag terminatingin a discharge throat at the upper end of the bag, and snap fastenerscarried by the strips comprising male and female elements, the maleelements being penetratable through the walls of the bag to enter thefemale elements to fasten the strips removably in position.

5. As an article of manufacture, a pair of clamping strips to bepositioned upon remote opposite faces of a vacuum cleaner dust bag, thestrips to be disposed in spaced parallelism with one edge of the bag andhaving certain of their ends terminating a short distance from the upperend of the bag causing an entrance passage and a discharge throat to beformed, and snap fasteners carried by said strips, comprising male andfemale elements, the former being penetratable through the walls of thebag to engage the latter for.

detachably fastening the strips in place.

6. As an article of manufacture, a pair of clamping strips to bepositioned upon remote opposite faces of a vacuum cleaner dust bag, thestripsto be disposed inspaced parallelism with one edge of the bag andhaving certain of their ends terminating a'short distance from the upperend of the bag causing an entrance passage and a discharge throat to beformed, and means carried by the strips and pcnetratable through thewalls of the bag to removably fasten the strips in place.

In testimony whereof I aifix my signature.

CHARLES RALPH DICKINSON.

